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smooth mesh

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This commit is contained in:
Guillaume Vern 2025-11-28 01:51:14 +01:00
parent 8e7f73d172
commit 5733a3b043
8 changed files with 99 additions and 57 deletions
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9
NoclipCamera.gd
View File

@ -2,10 +2,11 @@ extends RigidBody3D
var rot_x = 0
var rot_y = 0
@onready var world = $"../World/"
@onready var world = preload("res://world.tscn")
@export var PLAYER_SPEED = 1
@export var PLAYER_REACH = 1000
@export var NOCLIP = false
@export_range(0.00001, 0.01) var LOOK_SENSITIVITY = 0.002
var move_x = 0
var move_y = 0
@ -48,8 +49,10 @@ func _input(event):
camera.rotate_object_local(Vector3(-1, 0, 0), rot_y) # then rotate in X
# Called every frame. 'delta' is the elapsed time since the previous frame.
func _process(_delta):
process_noclip()
#process_physics_movements()
if NOCLIP:
process_noclip()
else:
process_physics_movements()
#for hit_pos in ray_hit_positions:
#DebugDraw3D.draw_sphere(hit_pos)

11
activation.gd
View File

@ -7,6 +7,9 @@ enum EnumWorld {CUBIC_WORLD, SMOOTH_WORLD}
var enabled_world: EnumWorld = EnumWorld.CUBIC_WORLD
var smooth_world = preload("res://smooth_world.tscn")
var cubic_world = preload("res://cubic_world.tscn")
signal change_world
func _process(_delta: float) -> void:
@ -17,11 +20,7 @@ func _process(_delta: float) -> void:
func _on_change_world():
match wanted_world:
EnumWorld.CUBIC_WORLD:
if $SmoothWorld:
$SmoothWorld.queue_free()
add_child(load("res://cubic_world.tscn").instantiate())
add_child(cubic_world.instantiate())
EnumWorld.SMOOTH_WORLD:
if $CubicWorld:
$CubicWorld.queue_free()
add_child(load("res://smooth_world.tscn").instantiate())
add_child(smooth_world.instantiate())
enabled_world = wanted_world

16
sample_point.gd
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@ -1,15 +1,3 @@
@tool
extends Node3D
@export var distance = 0
var color = Color.SKY_BLUE
func _process(_delta: float) -> void:
if distance > 0:
color = Color.MEDIUM_PURPLE
else:
color = Color.SKY_BLUE
DebugDraw3D.draw_square(position, 0.2, color)
@export var position = Vector3.ZERO
@export var visible = false

2
sample_point.tscn
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@ -3,4 +3,6 @@
[ext_resource type="Script" uid="uid://likm24qx18tm" path="res://sample_point.gd" id="1_x8428"]
[node name="SamplePoint" type="Node3D"]
visible = null
script = ExtResource("1_x8428")
visible = null

104
smooth_world.gd
View File

@ -1,37 +1,61 @@
@tool
extends Node3D
const CENTER := Vector3.ZERO
@export var RADIUS: float = 5.0
@export_range(0.0, 6.9999) var RADIUS: float = 5.0
var sample_points = {}
var SamplePoint = preload("res://sample_point.gd")
var surface_points = {}
var SurfacePoint = preload("res://surface_point.gd")
@export var world_size = 16
@export var show_sample_points = false
@export var show_surface_points = false
@export var show_surface = true
@export var do_the_thing: bool = false
@export var clear_the_thing: bool = false
var color = Color.CORAL
var surface_point_color = Color.CRIMSON
var mesh
var surface_tool: SurfaceTool = SurfaceTool.new()
var SAMPLE_POINT = preload("res://sample_point.tscn")
var SURFACE_POINT = preload("res://surface_point.tscn")
func _ready() -> void:
initialize_sample_points()
create_surface_points()
create_surface_mesh(world_size)
func _process(_delta: float) -> void:
clear()
create_surface_points()
create_surface_mesh(world_size)
if show_surface_points:
draw_surface_points()
if show_surface:
create_surface_mesh(world_size)
if show_sample_points:
draw_sample_points()
func clear():
sample_points = {}
surface_points = {}
mesh = ArrayMesh.new()
for child in get_children():
remove_child(child)
child.queue_free()
if child is MeshInstance3D:
child.queue_free()
func draw_sample_points():
for x in range(-world_size + 1, world_size):
for y in range(-world_size + 1, world_size):
for z in range(-world_size + 1, world_size):
DebugDraw3D.draw_square(sample_points[Vector3i(x, y, z)].position, 0.2, color)
func draw_surface_points():
for x in range(-world_size + 1, world_size):
for y in range(-world_size + 1, world_size):
for z in range(-world_size + 1, world_size):
if surface_points.has(Vector3i(x, y, z)):
DebugDraw3D.draw_square(surface_points[Vector3i(x, y, z)].position, 0.3, surface_point_color)
func get_sample_value(index: Vector3i) -> float:
return CENTER.distance_to(index) - RADIUS
@ -40,11 +64,11 @@ func initialize_sample_points():
for x in range(-world_size + 1, world_size):
for y in range(-world_size + 1, world_size):
for z in range(-world_size + 1, world_size):
var sample_point = SAMPLE_POINT.instantiate()
var sample_point = SamplePoint.new()
sample_point.distance = get_sample_value(Vector3i(x, y, z))
sample_point.position = Vector3(float(x), float(y), float(z))
sample_point.visible = show_sample_points
sample_points[Vector3i(x, y, z)] = sample_point
#add_child(sample_point)
func create_surface_points():
for x in range(-world_size + 1, world_size):
@ -53,16 +77,31 @@ func create_surface_points():
create_surface_point(Vector3i(x, y, z))
func create_surface_point(voxel: Vector3i):
var average_distance_from_sample = 0
var previous_sign = 0
var previous_sample_point
var previous_sample_point_distance_from_sdf
var intersection_points_sum = Vector3.ZERO
var intersection_points_number = Vector3.ZERO
for sample_point_to_check_index in range(SURFACE_AXIS.size()):
var sample_point_to_check = SURFACE_AXIS[sample_point_to_check_index]
average_distance_from_sample += get_sample_value(voxel + sample_point_to_check)
average_distance_from_sample /= 8
if average_distance_from_sample <= 0:
var surface_point = SURFACE_POINT.instantiate()
surface_point.position = Vector3(voxel)
var sample_point_to_check = voxel + SURFACE_AXIS[sample_point_to_check_index]
var sample_point_distance_from_sdf = get_sample_value(sample_point_to_check)
if previous_sign != 0 && sign(sample_point_distance_from_sdf) != previous_sign:
var intersection_point = (1-previous_sample_point_distance_from_sdf/(previous_sample_point_distance_from_sdf - sample_point_distance_from_sdf))*previous_sample_point+(previous_sample_point_distance_from_sdf/(previous_sample_point_distance_from_sdf-sample_point_distance_from_sdf)*sample_point_to_check)
intersection_points_sum += intersection_point
intersection_points_number += Vector3.ONE
previous_sign = sign(sample_point_distance_from_sdf)
previous_sample_point = sample_point_to_check
previous_sample_point_distance_from_sdf = sample_point_distance_from_sdf
if intersection_points_sum != Vector3.ZERO && intersection_points_number != Vector3.ZERO:
var intersection_points_average = intersection_points_sum/intersection_points_number
var surface_point = SurfacePoint.new()
surface_point.position = intersection_points_average
surface_point.visible = show_surface_points
surface_points[voxel] = surface_point
add_child(surface_point)
func calculate_surface_point_position(voxel: Vector3i):
var final_point = Vector3(voxel)
return final_point
func create_surface_mesh(size: int = 6):
surface_tool = SurfaceTool.new()
@ -79,6 +118,7 @@ func create_surface_mesh(size: int = 6):
func create_surface_mesh_quad(index: Vector3i):
for axis_index in range(AXIS.size()):
var axis = AXIS[axis_index]
var sample_value1 = get_sample_value(index)
var sample_value2 = get_sample_value(index + axis)
@ -106,8 +146,14 @@ const SURFACE_AXIS := [
func add_quad(index: Vector3i, axis_index: int):
var points = get_quad_points(index, axis_index)
var normal = Vector3(
(get_sample_value(index + SURFACE_AXIS[0]) - get_sample_value(index + SURFACE_AXIS[7])) + (get_sample_value(index + SURFACE_AXIS[5]) - get_sample_value(index + SURFACE_AXIS[1])) + (get_sample_value(index + SURFACE_AXIS[3]) - get_sample_value(index + SURFACE_AXIS[2])) + (get_sample_value(index + SURFACE_AXIS[6]) - get_sample_value(index + SURFACE_AXIS[4])),
(get_sample_value(index + SURFACE_AXIS[1]) - get_sample_value(index + SURFACE_AXIS[7])) + (get_sample_value(index + SURFACE_AXIS[5]) - get_sample_value(index + SURFACE_AXIS[0])) + (get_sample_value(index + SURFACE_AXIS[4]) - get_sample_value(index + SURFACE_AXIS[2])) + (get_sample_value(index + SURFACE_AXIS[6]) - get_sample_value(index + SURFACE_AXIS[3])),
(get_sample_value(index + SURFACE_AXIS[7]) - get_sample_value(index + SURFACE_AXIS[2])) + (get_sample_value(index + SURFACE_AXIS[0]) - get_sample_value(index + SURFACE_AXIS[3])) + (get_sample_value(index + SURFACE_AXIS[1]) - get_sample_value(index + SURFACE_AXIS[4])) + (get_sample_value(index + SURFACE_AXIS[5]) - get_sample_value(index + SURFACE_AXIS[6]))
)
surface_tool.set_normal(AXIS[axis_index])
surface_tool.set_normal(normal)
surface_tool.add_vertex(points[0])
surface_tool.add_vertex(points[1])
@ -119,8 +165,14 @@ func add_quad(index: Vector3i, axis_index: int):
func add_reversed_quad(index: Vector3i, axis_index: int):
var points = get_quad_points(index, axis_index)
var normal = Vector3(
(get_sample_value(index + SURFACE_AXIS[0]) - get_sample_value(index + SURFACE_AXIS[7])) + (get_sample_value(index + SURFACE_AXIS[5]) - get_sample_value(index + SURFACE_AXIS[1])) + (get_sample_value(index + SURFACE_AXIS[3]) - get_sample_value(index + SURFACE_AXIS[2])) + (get_sample_value(index + SURFACE_AXIS[6]) - get_sample_value(index + SURFACE_AXIS[4])),
(get_sample_value(index + SURFACE_AXIS[1]) - get_sample_value(index + SURFACE_AXIS[7])) + (get_sample_value(index + SURFACE_AXIS[5]) - get_sample_value(index + SURFACE_AXIS[0])) + (get_sample_value(index + SURFACE_AXIS[4]) - get_sample_value(index + SURFACE_AXIS[2])) + (get_sample_value(index + SURFACE_AXIS[6]) - get_sample_value(index + SURFACE_AXIS[3])),
(get_sample_value(index + SURFACE_AXIS[7]) - get_sample_value(index + SURFACE_AXIS[2])) + (get_sample_value(index + SURFACE_AXIS[0]) - get_sample_value(index + SURFACE_AXIS[3])) + (get_sample_value(index + SURFACE_AXIS[1]) - get_sample_value(index + SURFACE_AXIS[4])) + (get_sample_value(index + SURFACE_AXIS[5]) - get_sample_value(index + SURFACE_AXIS[6]))
)
surface_tool.set_normal(-AXIS[axis_index])
surface_tool.set_normal(normal)
surface_tool.add_vertex(points[0])
surface_tool.add_vertex(points[2])
@ -132,10 +184,10 @@ func add_reversed_quad(index: Vector3i, axis_index: int):
func get_quad_points(index: Vector3i, axis_index: int):
return [
index + QUAD_POINTS[axis_index][0],
index + QUAD_POINTS[axis_index][1],
index + QUAD_POINTS[axis_index][2],
index + QUAD_POINTS[axis_index][3],
surface_points[index + QUAD_POINTS[axis_index][0]].position,
surface_points[index + QUAD_POINTS[axis_index][1]].position,
surface_points[index + QUAD_POINTS[axis_index][2]].position,
surface_points[index + QUAD_POINTS[axis_index][3]].position,
]
const QUAD_POINTS := [

4
smooth_world.tscn
View File

@ -4,6 +4,8 @@
[node name="SmoothWorld" type="Node3D"]
script = ExtResource("1_4h467")
RADIUS = 4.182
RADIUS = 3.971
world_size = 8
show_sample_points = true
show_surface_points = true
do_the_thing = true

9
surface_point.gd
View File

@ -1,8 +1,3 @@
@tool
extends Node3D
var color = Color.DARK_GOLDENROD
func _process(_delta: float) -> void:
DebugDraw3D.draw_square(position, 0.2, color)
@export var position = Vector3.ZERO
@export var visible = false

1
world.tscn
View File

@ -29,5 +29,6 @@ shadow_enabled = true
[node name="Player" parent="." instance=ExtResource("3_036b0")]
transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 9.182447, 0.6673207, 0.0726881)
NOCLIP = true
[connection signal="change_world" from="." to="." method="_on_change_world"]